278872769

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{2551}}^1$

素因数の和:2685

約数の個数: 24

約数和(自身を含む): 342131328

約数和(自身を除く): 63258559

約数列:

[1, 7, 23, 49, 97, 161, 679, 1127, 2231, 2551, 4753, 15617, 17857, 58673, 109319, 124999, 247447, 410711, 1732129, 2874977, 5691281, 12124903, 39838967, 278872769]

約数ペア:

[(1, 278872769), (7, 39838967), (23, 12124903), (49, 5691281), (97, 2874977), (161, 1732129), (679, 410711), (1127, 247447), (2231, 124999), (2551, 109319), (4753, 58673), (15617, 17857)]